Hannah Sansford

PhD student in Statistics

hannah.sansford@bristol.ac.uk

School of Mathematics

University of Bristol


Research

I am a PhD student at the Centre for Doctoral Training in Computational Statistics and Data Science at the University of Bristol, supervised by Professor Patrick Rubin-Delanchy and Professor Nick Whiteley.

My research is involved with statistical inference on graphs. In particular, applying spectral methods to graph embeddings, and harnessing the low-dimensional manifold structure that can arise from these models. 

I recently completed a 6-month internship at Amazon, in which I researched the problem of hallucination detection in LLM responses. As well as implementing various LLM evaluation methods to be used in conjunction with the teams LLM applications, I developed a novel technique GraphEval, based on representing information in Knowledge Graph structures.

Publications

Hannah Sansford, Alexander Modell, Nick Whiteley, Patrick Rubin-Delanchy, (2023). 

International Conference on Artificial Intelligence and Statistics (AISTATS).  

Selected for oral presentation (<2% of all submissions).


Hannah Sansford, Nicholas Richardson, Hermina Petric Maretic, Juba Nait Saada, (2024).

KiL'24: Workshop on Knowledge-infused Learning co-located with 30th ACM KDD Conference.

Selected for oral presentation.

Recent and Upcoming Talks